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Eyelashes
An eyelash (also called lash) (Latin: ''Cilia'') is one of the hairs that grows at the edge of the eyelids. It grows in one layer on the edge of the upper and lower eyelids. Eyelashes protect the eye from debris, dust, and small particles and perform some of the same functions as whiskers do on a cat or a mouse in the sense that they are sensitive to being touched, thus providing a warning that an object (such as an insect) is near the eye (which then closes reflexively). The Ancient Greek word for eyelash is βλέφαρον (transliterated as blepharon), which is seen as a root in biological terms like ''Blephara''. Structure Development The eyelashes of the human embryo develop from the ectoderm between the 22nd and 26th week of pregnancy. Natural eyelashes do not grow beyond a certain length, and fall off by themselves without any need for trimming. Eyelashes take about seven to eight weeks to grow back if pulled out, but constant pulling may lead to permanent damage. Their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eyelash Extensions
Eyelash extensions are a cosmetic enhancement that involves attaching synthetic or natural hair fibers to the natural eyelashes to create a fuller, more dramatic look. They are applied by a professional using a specialized adhesive and can last for several weeks with proper care. Eyelash extensions are available in various lengths, thicknesses, and curvatures, and can be made from synthetic or natural materials. They offer a semi-permanent way to enhance the appearance of the eyes and can be a convenient alternative to traditional mascaras and false lashes. History In 1879, James D. McCabe wrote ''The National Encyclopædia of Business and Social Forms,'' where, in the section "Laws of Etiquette", he stated that eyelashes could be lengthened by cutting the ends with a pair of scissors. Other beauty books, such as ''My Lady's Dressing Room'' (1892) by Baronne Staffe and ''Beauty's Aids or How to be Beautiful'' (1901) by Countess C also state that the trimming of eyelashes along with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blephara
''Catocala'' is a generally Holarctic genus of moths in the family Erebidae. The genus was erected by Franz von Paula Schrank in 1802. The moths are commonly known as underwing moths or simply underwings. These terms are sometimes used for #Other "underwing moths", a few related moths, but usually – especially when used in plural, not as part of a species name – they are used to refer to ''Catocala'' only. Of the more than 250 known species, slightly less than half are found in North America – mostly in the United States – while the rest occur in Eurasia. About one-fifth (almost 30) of these species are native to Europe. A few species occur in the northern Neotropics and Indomalaya. Description and ecology Most species of ''Catocala'' have medium to large adults, crypsis, cryptically coloured except for the hindwings, which are marked with stripes in orange, red, white, or even blue. In some, the hindwings are mostly blackish. Unlike what the common name "underwings" see ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moll's Gland
Moll's gland, also known as the gland of Moll or ciliary gland, is a modified apocrine sweat gland that is found on the margin of the eyelid. They are next to the base of the eyelashes, and anterior to the meibomian glands within the distal eyelid margin. These glands are relatively large and tubular-shaped. The glands of Moll are named after Dutch oculist Jacob Anton Moll (1832–1914). Glands of Moll empty into the adjacent lashes. Glands of Moll and Zeis secrete sebum that keeps lashes supple. The glands of Moll are prone to infection and blockage of its duct with sebum and cell debris. Blockage of the gland's duct causes swelling which can manifest itself as a stye. See also * Meibomian gland * List of specialized glands within the human integumentary system This article contains a list of glands of the human body List of endocrine and exocrine glands Skin There are several specialized glands within the human integumentary system that are derived from apocrine or s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead(II) Sulfide
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is toxic, even in small amounts, especially to children. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases, and it tends to form covalent bonds. Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited to organolead compounds. Like the lighter members of the group, le ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antimony
Antimony is a chemical element with the symbol Sb (from la, stibium) and atomic number 51. A lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite (Sb2S3). Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name kohl. The earliest known description of the metal in the West was written in 1540 by Vannoccio Biringuccio. China is the largest producer of antimony and its compounds, with most production coming from the Xikuangshan Mine in Hunan. The industrial methods for refining antimony from stibnite are roasting followed by reduction with carbon, or direct reduction of stibnite with iron. The largest applications for metallic antimony are in alloys with lead and tin, which have improved properties for solders, bullets, and plain bearings. It improves the rigidity of lead-alloy plates in lead–acid batteries. Antimony trioxide is a prominent additive for halo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kohl (cosmetics)
Kohl ( ar, كُحْل, kuḥl), kajal or kajol is an ancient eye cosmetic, traditionally made by grinding stibnite (Sb2S3) for use similar to that of charcoal in mascara. It is widely used in the Middle East, Caucasus and North Africa, South Asia, West Africa, and the Horn of Africa as eyeliner to contour and/or darken the eyelids and as mascara for the eyelashes. It is worn mostly by women, but also by some men and children. The content of kohl and various ways to prepare it differ based on tradition and country. Several studies have questioned the safety of kohl due to the dangers of lead poisoning. Name The Arabic name formed the Arabic root ''k-ḥ-l, “to apply kohl”''. Transliteration variants of Arabic dialectal pronunciation include ''kohl'' or ''kuhl''. The Arabic word cognates with Syriac-Aramaic word ܟܘܚܠܐ/כוחלא ''kuḥla''. Both words derived from Akkadian 𒎎𒋆𒁉𒍣𒁕 ''guẖlu(m)'' meaning stibium. The English word ''alcohol'' is a loan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Springer Science+Business Media
Springer Science+Business Media, commonly known as Springer, is a German multinational publishing company of books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing. Originally founded in 1842 in Berlin, it expanded internationally in the 1960s, and through mergers in the 1990s and a sale to venture capitalists it fused with Wolters Kluwer and eventually became part of Springer Nature in 2015. Springer has major offices in Berlin, Heidelberg, Dordrecht, and New York City. History Julius Springer founded Springer-Verlag in Berlin in 1842 and his son Ferdinand Springer grew it from a small firm of 4 employees into Germany's then second largest academic publisher with 65 staff in 1872.Chronology ". Springer Science+Business Media. In 1964, Springer expanded its business internationally, o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hadza People
The Hadza, or Hadzabe (''Wahadzabe'' in Swahili), are a Tanzanian indigenous ethnic group mostly based in southwest Karatu District of Arusha Region. They live around Lake Eyasi in the central Rift Valley and in the neighboring Serengeti Plateau. There are, as of 2015, between 1,200 and 1,300 Hadza people living in Tanzania, however only around 400 Hadza still survive exclusively based on the traditional means of foraging. Additionally, the increasing impact of tourism and encroaching pastoralists pose serious threats to the continuation of their traditional way of life. Genetically, the Hadza are not closely related to any other people. Once classified among the Khoisan languages, primarily because it has clicks, the Hadza language (Hadzane) is actually thought to be an isolate, unrelated to any other. Hadzane is an entirely oral language, but it is not predicted to be in danger of extinction. UNESCO states that the language is not endangered but vulnerable because most child ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Attractiveness
Physical attractiveness is the degree to which a person's physical features are considered aesthetically pleasing or beautiful. The term often implies sexual attractiveness or desirability, but can also be distinct from either. There are many factors which influence one person's attraction to another, with physical aspects being one of them. Physical attraction itself includes universal perceptions common to all human cultures such as facial symmetry, sociocultural dependent attributes and personal preferences unique to a particular individual. In many cases, humans subconsciously attribute positive characteristics, such as intelligence and honesty, to physically attractive people, a psychological phenomenon called the Halo effect. From research done in the United States and United Kingdom, it was found that objective measures of physical attractiveness and intelligence are positively correlated and that the association between the two attributes is stronger among men than am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Green Mascara
Green is the color between cyan and yellow on the visible spectrum. It is evoked by light which has a dominant wavelength of roughly 495570 nm. In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content. During post-classical and early modern Europe, green was the color commonly associated with wealth, merchants, bankers, and the gentry, while red was r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hair Follicle
The hair follicle is an organ found in mammalian skin. It resides in the dermal layer of the skin and is made up of 20 different cell types, each with distinct functions. The hair follicle regulates hair growth via a complex interaction between hormones, neuropeptides, and immune cells. This complex interaction induces the hair follicle to produce different types of hair as seen on different parts of the body. For example, terminal hairs grow on the scalp and lanugo hairs are seen covering the bodies of fetuses in the uterus and in some newborn babies. The process of hair growth occurs in distinct sequential stages. The first stage is called ''anagen'' and is the active growth phase, ''telogen'' is the resting stage, ''catagen'' is the regression of the hair follicle phase, ''exogen'' is the active shedding of hair phase and lastly ''kenogen'' is the phase between the empty hair follicle and the growth of new hair. The function of hair in humans has long been a subject of interest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mite
Mites are small arachnids (eight-legged arthropods). Mites span two large orders of arachnids, the Acariformes and the Parasitiformes, which were historically grouped together in the subclass Acari, but genetic analysis does not show clear evidence of a close relationship. Most mites are tiny, less than in length, and have a simple, unsegmented body plan. The small size of most species makes them easily overlooked; some species live in water, many live in soil as decomposers, others live on plants, sometimes creating galls, while others again are Predation, predators or Parasitism, parasites. This last type includes the commercially destructive ''Varroa'' parasite of honey bees, as well as scabies mites of humans. Most species are harmless to humans, but a few are associated with allergies or may transmit diseases. The scientific discipline devoted to the study of mites is called acarology. Evolution and taxonomy The mites are not a defined taxon, but is used for two disti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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